Microsoft has uncovered a new cyber espionage campaign by the Russian state actor Secret Blizzard, which is targeting embassies located in Moscow. The attacks are assisted by official Russian domestic intercept systems and involve the use of malicious files masquerading as Kaspersky anti-virus software. “This campaign, which has been ongoing since at least 2024, poses a high risk to foreign embassies, diplomatic entities, and other sensitive organizations operating in Moscow, particularly to those entities who rely on local internet providers,” the researchers wrote in a blog dated July 31. Secret Blizzard is an advanced persistent threat (APT) group that US authorities have attributed to Russia’s Federal Security Service (FSB). It targets ministries of foreign affairs, embassies,…